JP5023095B2 - Water purification cartridge - Google Patents

Description

The present invention relates to a water purification cartridge.

  Conventionally, as a filtering member, calcium sulfite particles are filled in the streaky voids formed by winding a laminate formed by laminating a zigzag water-permeable sheet on the surface of a flat water-permeable sheet. One in which raw water is brought into contact with calcium sulfite particles through an aqueous sheet is known (for example, see Patent Document 1).

JP-A-8-215093

  However, in the above conventional technique, since a nonwoven fabric of synthetic fibers is used as the water-permeable sheet, the filtration accuracy is low and water cannot be purified efficiently.

The present invention aims to obtain a water purification cartridge that can the be carried out efficiently purified water.

The invention according to claim 1 is a water purification cartridge having a filtration member including a porous body in which a flow path is formed by fusing a ridge line of a porous member having a corrugated cross section on the surface of a flat plate-like porous member. A cartridge case having a raw water inlet at one end and a purified water outlet at the other end, and a purification material is housed inside the cartridge case, and between the inlet and outlet inside the cartridge case. A purification material storage provided, and a filtration member storage provided in the cartridge case, and a filtration member storage provided downstream of the purification material storage in the cartridge case. the first to seal the flow passage extending direction one end side of the flow passage, said plurality of said porous body passage extending direction one end side to form a second flow passage are stacked in a state of being sealed, The other end of the second flow passage in the flow passage extending direction The sealed, characterized in that a plurality of said porous body stacked with intervening spacers.

The invention according to claim 2 is characterized in that in the filtration member according to claim 1 , the laminated porous body is supported by a case.

According to the invention of claim 1, the porous body is formed by fusing the ridge line of the corrugated porous member on the surface of the flat porous member, and the first flow formed in the porous body is formed. By sealing one end of the passage, when water flows into the first flow path from the outside of the porous body or when water flows out of the first flow path to the outside of the porous body, the water is made porous. Since the material can be allowed to flow in or out, the filtration accuracy can be improved, and water can be purified more efficiently.

According to the first aspect of the present invention, the plurality of porous bodies are stacked in a state where one end side in the flow passage extending direction is sealed to form the second flow passage, and the flow passage extending direction of the second flow passage. By sealing the other end side, the effective filtration area of the porous body can be increased with a relatively simple configuration, so that water can be purified more efficiently.

According to the first aspect of the present invention, by laminating a plurality of porous bodies with a spacer interposed therebetween, it is possible to perform filtration even with the spacer itself, and the filtration accuracy can be further improved.

According to the second aspect of the present invention, an easy-to-handle filter member can be obtained by supporting the laminated porous body with the case.

FIG. 1 is a cross-sectional view of a water purification cartridge according to the first embodiment of the present invention. FIG. 2 is a perspective view showing a developed state of the porous filter according to the first embodiment of the present invention. FIG. 3 is a perspective view showing the filter member according to the first embodiment of the present invention. FIG. 4 is a sectional view of a water purification cartridge according to the second embodiment of the present invention. FIG. 5 is a perspective view showing a filtration member according to the second embodiment of the present invention. FIG. 6 is a diagram schematically showing a state in which the porous filters according to the second embodiment of the present invention are stacked. FIG. 7 is a diagram schematically showing a state in which porous filters according to a modification of the second embodiment of the present invention are stacked.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that similar components are included in the following embodiments. Therefore, in the following, common reference numerals are given to those similar components, and redundant description is omitted.

  (First Embodiment) FIGS. 1 to 3 show a first embodiment of the present invention, FIG. 1 is a sectional view of a water purification cartridge, and FIG. 2 is a perspective view showing a state in which a porous filter is developed, FIG. 3 is a perspective view showing the filtering member.

  As shown in FIG. 1, the water purification cartridge 1 according to the present embodiment includes an inlet 2 for raw water at one end (lower end in FIG. 1) and a purified water outlet 3 at the other end (upper end in FIG. 1). , A purification material storage portion 5 provided between the inlet 2 and the outlet 3 in the cartridge case 4, and a purification material 9 stored in the purification material storage portion 5. A filter member storage portion 6 provided on the downstream side of the purification material storage portion 5 in the cartridge case 4, and a filter member 10 stored in the filter member storage portion 6. The raw water flowing into the cartridge case 4 from 2 is filtered through the purification material 9 in the purification material storage unit 5 and the filtration member 10 in the filtration member storage unit 6, and the filtered purified water flows out from the outlet 3. It has become so.

  The cartridge case 4 includes a lower case 41 in which the above-described purification material storage unit 5 is provided, and an upper case 42 in which the filter member storage unit 6 is provided, and the lower case 41 and the upper case 42 are coupled to each other. Is formed.

  The lower case 41 is formed in a bottomed cylindrical shape whose lower end is closed by a bottom wall (bottom wall of the cartridge case) 41a, and the above-described inlet 2 is formed in the center of the bottom wall 41a. The upper case 42 is formed in a cylindrical shape whose upper end is closed by the top wall 42a, and the above-described outflow port 3 is formed at the center of the top wall 42a. And the rib 41d is formed in the inner peripheral side of the upper end part of the side wall 41b of the lower case 41, and the rib 41e is protrudingly provided by the outer periphery above the rib 41d of the side wall 41b. Further, an enlarged diameter portion 42c having an inner diameter substantially equal to the outer diameter of the side wall 41b of the lower case 41 is formed at the lower end of the side wall 41b of the upper case 42. The enlarged diameter portion 42c of the upper case 42 is fitted into the upper end portion of the side wall 41b of the lower case 41, and the distal end of the enlarged diameter portion 42c of the upper case 42 is abutted against the rib 41e. The lower case 41 and the upper case 42 are fixed with a liquid-tight structure by joining the outer periphery of the side wall 41b to the inner periphery by ultrasonic welding or the like.

  The rib 41 d formed on the inner peripheral side of the lower case 41 is provided with an intermediate plate 7 that partitions the purification material storage 5 and the filter member storage 6. In this embodiment, the intermediate plate 7 has an outer diameter that is substantially the same as the inner diameter of the side wall 41b of the lower case 41, and is fitted into the side wall 41b of the lower case 41 and joined by ultrasonic welding or the like. The intermediate plate 7 may be sandwiched between the upper end portion of the lower case 41 and the lower end portion of the upper case 42. Furthermore, a non-woven fabric may be disposed between the intermediate plate 7 and the filter member 10 so that water discharged through the purification material 9 is rectified by this non-woven fabric.

  In addition, a substantially annular opening is formed in the central portion of the intermediate plate 7, and a porous film that prevents passage of the purifying material 9 but allows passage of water is provided in the opening. An annular groove 11b is formed in the outer peripheral portion of the side wall 11a of the main body 11 of the filtration member 10, and the liquid tightness between the filtration member 10 and the upper case 42 is secured by the seal ring 8 fitted in the annular groove 11b. Is secured.

  In this embodiment, activated carbon or ceramic is used as the purification material 9. And the lower end of the purification material storage part 5 is obstruct | occluded by the mesh 51, and it suppresses that the purification material 9 spills from the inflow port 2.

  The filtering member 10 is formed by adhering a porous filter body (porous body) 12 with an adhesive 16 inside a case 11 formed in a substantially cylindrical shape. The filtering member 10 is provided with a plurality of flow paths. An inflow portion 17 is formed on one end side in the axial direction of the filtering member 10, and an outflow portion 18 is formed on the other end side.

  The plurality of channels are sealed on the inflow portion 17 side of the filtration member 10 and the outflow side flow channel 20 that opens on the outflow portion 18 side of the filtration member 10 and on the outflow portion 18 side of the filtration member 10. And an inflow side channel 21 that is open on the inflow portion 17 side of the filter member 10.

  As shown in FIG. 2, the filter body 12 is integrally formed by welding (fusion) the ridge line 14 a of the porous member 14 having a corrugated cross section to the surface 13 a of the flat plate-like porous member 13.

  In this way, the flat plate-like porous member 13 and the cross-sectional wave-shaped porous member 14 are integrated by fusing together, so that the flat plate-like porous member 13 and the cross-sectional wave-shaped porous member 14 are integrated. Thus, the flow passage 19 is formed. And the inflow side flow path 21 is formed by sealing the flow path extending direction one end side (the outflow part 18 side in this embodiment) of the flow path 19 with a sealing member 15 such as urethane resin. . The inflow part 17 side may be sealed to form the outflow side flow path 20.

  Examples of the material of the flat plate-like porous member 13 and the corrugated porous member 14 include resin materials such as tetrafluoroethylene, polyethylene, polypropylene, cellulose acetate, polyacrylonitrile, polyimide, polysulfone, and polyethersulfone. Further, ceramic materials such as aluminum oxide, zirconium oxide, and titanium oxide, stainless steel, and glass can be used, but the material is not limited to these materials.

  It is also possible to introduce new functions in addition to filtration by introducing ion exchange or ligands (affinity groups) for special substances into these materials.

  Alternatively, a resin mesh or the like may be attached to one surface of the flat plate-like porous member 13 and the corrugated porous member 14 to increase the strength. Such reinforcement is particularly effective when a resin thin film is used.

  In the present embodiment, the porous body 12 is wound around the flow passage extending direction (the axial direction of the case 11) to form a flow passage (corresponding to the third flow passage) 19 and the flow. The outflow side flow path 20 is formed by sealing the other end side of the flow path 19 in the flow path extending direction (in the present embodiment, the inflow portion 17 side) with a sealing member 22 such as urethane resin.

  Specifically, the winding layer body 24 is formed by welding the ridge line 14b of the filter body 12 to the back surface 13b of the filter body 12 to form the wound layer body 24, thereby forming the inflow channel 21 in the wound layer body 24. A flow passage (corresponding to the third flow passage) 19 is formed separately from the passage 19, and the other end side of the flow passage (corresponding to the third flow passage) 19 in the flow passage extending direction is formed by the sealing member 22. The outflow side flow path 20 is formed by sealing.

  Then, the wound layer body 24 in which the outflow side flow path 20 and the inflow side flow path 21 are formed is accommodated in the substantially cylindrical case 11 and adhered to the case 11 with the adhesive 16. The filtering member 10 is formed by preventing the outflow portion 18 from communicating with the inside of the case 11.

  In the present embodiment, the cross-sectional shapes orthogonal to the axial direction of the outflow side channel 20 and the inflow side channel 21 are substantially the same triangular shape.

  When water is caused to flow into the inflow side flow channel 21 from the inflow portion 17 side of the filtration member 10 configured as described above, the water in the inflow side flow channel 21 is supplied to the inflow side flow channel 21 as shown in FIG. Is filtered by passing through the filter body 12 between the gas and the outflow side channel 20 and sent into the outflow side channel 20. And the water in the outflow side flow path 20 flows out from the outflow part 18 of the filtration member 10, and flows out from the outflow port 3. FIG.

  As described above, the filter body (porous body) 12 is formed by welding (fusion) the ridge line 14a of the porous member 14 having a cross-sectional wave shape to the surface 13a of the flat porous member 13 as in the present embodiment. If one end of the flow passage 19 formed in the filter body 12 is sealed by the sealing member 15 to form the inflow channel 21, the water flowing into the inflow channel 21 can be removed. When the water flows out of the filter body 12, the water can flow out through the filter body 12, so that the filtration accuracy can be improved and the water can be purified more efficiently. .

  In addition, according to the present embodiment, the porous body 12 is wound around the flow passage extending direction (the axial direction of the case 11) to form the flow passage (third flow passage) 19 and the flow passage. Since the outflow side flow path 20 is formed by sealing the other end side (in the present embodiment, the inflow portion 17 side) of the flow path 19 with the sealing member 22, the filter can be formed with a relatively simple configuration. The effective filtration area of the body 12 can be increased, and water can be purified more efficiently.

  Moreover, according to this embodiment, since the wound layer body 24 in which the outflow side flow path 20 and the inflow side flow path 21 are formed is accommodated in the substantially cylindrical case 11, the filter member 10 that is easy to handle is obtained. Can do.

  Moreover, according to this embodiment, the water purification cartridge 1 equipped with the filtration member 10 which has the said effect can be obtained.

  (Second Embodiment) FIGS. 4 to 7 show a second embodiment of the present invention. FIG. 4 is a sectional view of a water purification cartridge, FIG. 5 is a perspective view showing a filtering member, and FIG. FIG. 7 schematically shows a state in which porous filters according to a modification of the second embodiment of the present invention are laminated. FIG.

  As shown in FIG. 4, the water purification cartridge 1 </ b> A according to the present embodiment basically has the same configuration as the water purification cartridge 1 of the first embodiment, and the raw water inlet 2 and the other end at one end. A cartridge case 4 having a purified water outlet 3, a purification material storage portion 5 provided between the inlet 2 and the outlet 3 in the cartridge case 4, and the interior of the purification material storage portion 5. A purifying material 9 housed in the filter case, a filtering member housing portion 6 provided on the downstream side of the purifying material housing portion 5 in the cartridge case 4, a filtering member 10A housed in the filtering member housing portion 6, The raw water flowing into the cartridge case 4 from the inlet 2 is filtered through the purifying material 9 in the purifying material storage section 5 and the filtering member 10A in the filtering member storage section 6 and filtered. Will flow out of the outlet 3 It has become.

  Here, this embodiment is mainly different from the first embodiment in that a laminated body 12A formed by laminating a plurality of porous filter bodies (porous bodies) 12 is used, and the laminated body 12A is substantially cylindrical. The filter member 10 </ b> A is formed by being accommodated in the case 11 formed in a shape and bonded by the adhesive 16.

  Specifically, as shown in FIG. 6, one end side of the flow passage 19 in the flow passage extending direction (the outflow portion 18 side in this embodiment) is sealed with the sealing member 15 to form the inflow side flow passage 21. A laminated body 12A is formed by laminating a plurality of ridgelines 14b of another filter body 12 on the back surface 13b of the filter body 12 so as to face each other through a spacer 23 such as a nonwoven fabric, and welding (fused) the respective filter bodies 12 together. Is forming. In addition, as shown in FIG. 7, you may make it weld the ridgeline 14b of the other filter body 12 to the back surface 13b of the filter body 12 directly without the spacer 23, and form the laminated body 12B.

  Then, the other end side in the flow passage extending direction of the flow passage (corresponding to the second flow passage) 19 formed separately from the flow passage 19 forming the inflow side flow passage 21 in the laminated body 12A is sealed with the sealing member 22. The outflow side flow path 20 is formed by stopping. At this time, the other end side of the spacer 23 in the flow passage extending direction is also sealed.

  In the present embodiment, as shown in FIG. 5, the outline shape of the laminated body 12 </ b> A is made to follow the outline shape of the case 11 by changing the width of the filter bodies 12 to be laminated.

  The laminate 12A in which the outflow channel 20 and the inflow channel 21 are formed is housed in a substantially cylindrical case 11 and adhered to the case 11 with an adhesive 16, and the inflow portion 17 and the outflow The filtering member 10 </ b> A is formed by preventing the portion 18 from communicating with the case 11.

  Also according to this embodiment described above, the same operational effects as those of the first embodiment can be obtained.

  Further, according to the present embodiment, the plurality of filter bodies 12 are stacked in a state where the outflow portion 18 side (one end side in the flow passage extending direction) is sealed, and the flow passage (corresponding to the second flow passage) 19 is formed. By forming and sealing the inflow portion 17 side (the other end side in the flow passage extending direction) of the flow passage (corresponding to the second flow passage) 19, a laminate (porous body) with a relatively simple configuration Since the effective filtration area of 12A can be increased, water can be purified more efficiently.

  In addition, according to the present embodiment, by laminating the plurality of filter bodies 12 with the spacers 23 interposed, it is possible to perform filtration with the spacers 23 themselves, and the filtration accuracy can be further improved.

  Moreover, according to this embodiment, since the laminated bodies (laminated porous bodies) 12A and 12B in which the outflow side flow path 20 and the inflow side flow path 21 are formed are accommodated in the substantially cylindrical case 11, handling is possible. An easy filtration member 10A can be obtained.

  The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above embodiments, and various modifications can be made.

  For example, the water purification cartridge may have a shape other than the cylindrical shape. In addition, the filtering member storage section, the purification material storage section, and other detailed specifications (shape, size, layout, etc.) can be changed as appropriate.

  Moreover, in the said embodiment, although what provided the purification | cleaning material in addition to the filtration member was illustrated, it does not need to provide a purification | cleaning material. Moreover, the purification | cleaning material should just use the material which can filter or purify water other than activated carbon or a ceramic.

DESCRIPTION OF SYMBOLS 1, 1A Water purification cartridge 6 Filtration member accommodating part 10, 10A Filtration member 11 Case 12 Filter body (porous body)
12A, 12B Laminate 12a Ridge line 13 Flat plate-like porous member 13a Surface 14 Cross-sectionally porous member 14a Ridge line 17 Inflow part 18 Outflow part 19 Flow path 23 Spacer 24 Winding layer

Claims (2)

A water purification cartridge having a filtration member including a porous body in which a flow path is formed by fusing a ridge line of a porous member having a corrugated cross section on the surface of a flat porous member,
A cartridge case having an inlet of raw water at one end and an outlet of purified water at the other end;
A purifying material is housed inside, and a purifying material housing portion provided between an inlet and an outlet inside the cartridge case,
The filtration member is housed inside, and a filtration member housing portion provided on the downstream side of the purification material housing portion in the cartridge case,
It said filter member, said first and seal the flow passage extending direction one end side of the flow passage, the second flow by stacking a plurality of the porous body in a state where the flow path extending direction one end side is sealed Forming a path, sealing the other end side of the second flow path in the flow path extending direction,
A water purification cartridge , wherein a plurality of the porous bodies are stacked with a spacer interposed therebetween . The water purification cartridge according to claim 1, wherein the laminated porous body is supported by a case.

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